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Taring function PN6

Suitable taring functions can be selected for various applications. These functions differ
essentially in the method of saving the measured offset value. If no taring is selected,

PN6=0

,

the offset value is always taken to be zero.

With permanent taring,

PN6=1

, the measured offset value in program number

PN5

is

permanently saved in the user settings.

With transient taring,

PN6=2

, the offset value is retained only for the time the display is in

operation. It is lost once the voltage is switched off. Since the integrated permanent memory has
only limited writing capacity, this setting is used for very frequent taring operations (>10x a day)
as with recipe balances. The trigger for the taring must be activated for 1-2 seconds.

With fast transient taring without a message using

PN6=3

, the taring is performed within a

measuring cycle, whereby the offset value is lost when the unit is restarted. This mode is
intended for fully automatic processes in which fast, frequent taring is required via a control
system. The taring signal is filtered only with 50 ms and the taring is carried out without any
message.

With the

PN6=4

setting, the taring is performed on the offset calibration point

PN2

. There is no

shift in the offset value, but the linearisation of the sensor is changed directly. The currently set
measurement for

PN2

is taken over. The trigger must previously be activated for at least 1-2

seconds.

With the static taring,

PN6=5

, the taring operation is performed with an upward slope and held

until the signal is taken away again. After that, the absolute value is displayed. This function is
especially suitable for checking tightness where the pressure loss and final pressure have to be
measured.

Set value for taring PN7

For the display, a target value can be determined for the taring operation. As a rule, it is always
calibrated to zero, i.e. zero is shown in the display following a taring operation. However, this
value can also be changed to any other desired value. If 200 is entered under

PN7

, the offset

value will shift so that, after taring, 200 is displayed. Both of these happen, of course, only on
condition that the display is parameterised to the current measurement

PN15=1

. Where no

trigger is selected for a taring (PN8=0), a taring operation is performed during programming.

Trigger for taring PN8

The taring set in the unit via

PN6

can be triggered via several sources and unit states. If

no

trigger

(

PN8=0

) has been selected, but a taring function has been selected, taring is performed

during programming of the target value

PN7

. If the

digital input

is selected

as a trigger

(

PN8=1

), a taring operation is performed when applying a positive voltage. The same applies to

the

4

th

key

on the display front, which can be selected for taring via

PN8=2 as triggering

. Here

aswell, the period of activation depends on the taring function. Another option is for the

system

start-up

(power-up reset) to

trigger

a taring operation (

PN8=4

). For this of course, there is no

activation period!

23

8. Program number description

Summary of Contents for IPM5

Page 1: ...2 of measuring range are noise free high long term and temperature stability 5 digit digital display with range from 9999 to 99999 digits free scaling and setting of decimal point alignment of a senso...

Page 2: ...ndex D version D 4 wire sensor M 6 wire sensor W Switching points 0 no switching points Number of digits 2 2 relay outputs 5 digits 5 4 4 relay outputs Interface Mechanical options none 0 7 IP65 foil...

Page 3: ...calibration 6 4 3 Adjustment with 80 calibration IPM5 6 4 4 Sensitivity recognition 6 4 5 Automatical calibration 6 4 6 Taring 6 4 7 Hold function 6 5 Interfaces RS232 RS485 7 Programming 7 1 Program...

Page 4: ...of 4 relays are available to monitor the threshold values Data from and to the device can be transmitted via the serial interface The IPM5 has a 4 wire connection with an additional calibration contac...

Page 5: ...ching points 1 LED per switching point Overflow horizontal bars at the top Underflow horizontal bars at the bottom Display time 0 1 to 10 0 seconds Strain gauge input Measuring range Metering precisio...

Page 6: ...pecific ASCII RS232 9600 Baud no parity 8 data bit 1 stop bit Cable length max 3 m RS485 9600 Baud no parity 8 data bit 1 stop bit Cable length max 1000 m Power pack Voltage supply 100 240 VAC 50 60 H...

Page 7: ...e wheeling diodes Keep input output and supply lines separate from one another and do not lay them parallel with each other Position go and return lines next to one another Where possible use twisted...

Page 8: ...5 IPW5 Gap for physical unit 1 After removing the fixing elements insert the device 2 Check the seal to make sure it fits securely 3 Click the fixing elements back into place and tighten the clamping...

Page 9: ...or strip RS232 41 42 43 GND RS TxD RxD or RS485 41 42 43 GND RS Data B Data A The lines of the RS232 interface need to be connected 1 1 TxD to TxD and RxD to RxD RxD TxD GND RxD TxD GND IPW5 IPM5 PC o...

Page 10: ...th a calibration wire CAL Mass pressure sensors which frequently have an additional wire for the artificial unbalance 80 of the bridge can be automatically calibrated via terminal 7 Examples of the co...

Page 11: ...e 100 240 VAC 9 5 Electrical connection 100 240 VAC 2 3 4 5 6 7 8 9 10 11 In 2 In 3 In 4 In 5 In 6 In 7 Strain gauge input Analog output Digital input In 1 1 12 L 13 Auxiliary voltage 14 N Din 2 3 4 5...

Page 12: ...ustable Unit C F Pt100 thermocouple Switchpoint displays 2 Optical limit value report 4 LED red Keys 5 6 7 and 3 Programming mode Increase range of value Reduce range of value Select next lower progra...

Page 13: ...in value Erase the value that is shown in the display by simultaneously operating the and keys The erasure is acknowledged by horizontal bars The content of the memory will be lost with switching off...

Page 14: ...on below the threshold and switched off on reaching the threshold Switching on delay The relay S1 S4 is on 10 seconds after reaching the threshold briefly exceeding the threshold does not lead to the...

Page 15: ...nt value with possible taring the min value the max value the Hold value or the absolute value without possible taring The analogue output is updated in the cycle of the measuring time PN14 and has at...

Page 16: ...he second run the calibration is carried out in the relevant measuring zone The procedure is as follows Sensitivity recognition Display of SEnS for the entire process Amplification of the measuring in...

Page 17: ...offset nor end value are within the measuring range CErr2 if the end value is not at least 1 of measuring range greater than offset CErr3 if the end value is outside the measuring range CErr4 if the...

Page 18: ...ransmitted so that the output can be displayed directly on a terminal or processed by a SPS Zeros at the front are suppressed during transmission With an overflow or underflow the display transmits ho...

Page 19: ...ommand is sent the display will acknowledge this with an via the interface Under normal conditions the display does not send an acknowledgement back Only when the value is called up or the acknowledge...

Page 20: ...number Change to the next program number Program number is displayed Change read the deposited parameters in the program Flashing of the least significant digit Save parameter Save the complete range...

Page 21: ...d parameters are displayed In this case it is 75 640 7 1 Programming procedure The entire programming of the IPM5 IPW5 is done by the steps described below Change to programming mode Push the P key to...

Page 22: ...sume the figure has to be changed from 75 640 to 75 000 Briefly push the P key to move to the next digit The 4 begins to flash Change the figure by pushing or key to change the digit from 4 to 0 Brief...

Page 23: ...sensors and the corresponding display value programmed under the following program numbers PN101 PN105 The sensor signal must be parameterised with a strictly monotonous rising configuration A gap of...

Page 24: ...ller than the offset setting PN2 It must differ from its measured value by at least 1 of the measuring range of the programmed offset value in PN2 If a standard sensor has been selected PN0 2 3 or 4 t...

Page 25: ...conds With the static taring PN6 5 the taring operation is performed with an upward slope and held until the signal is taken away again After that the absolute value is displayed This function is espe...

Page 26: ...ered direct after returning from the programming mode by confirming PN9 Calibration point PN10 Calibration point PN10 gives the percentage target value for the end value calibration As a rule 100 00 i...

Page 27: ...the trigger is returned again PN16 8 has a special status because here no min max values can be called up via or key This mode is particularly necessary with calibrated balances due to the possibility...

Page 28: ...ameter 59 95 X X X X X X Set value for taring 7 X X X X X Interfaces parameter Device option 32 34 X X X X Analog output parameter Device option 20 23 X X X X Measuring input parameter 0 18 X X X Line...

Page 29: ...e various parameters is given in section 6 2 Relays The program numbers are also available when no relays are carried out in the unit In such cases only the relevant alarm LED light up on the front of...

Page 30: ...99 0 2 3 Places after decimal point 0 4 none 2 5 Offset displacement 9999 99999 0 2 6 Taring function 0 no taring 1 permanent taring 2 transient taring 3 quick transient taring without report 4 perman...

Page 31: ...1 10 0 1 0 2 14 Measuring time 0 01 10 00 1 00 2 15 Display mode 1 current measurand 2 min value 3 max value 4 Hold value 5 absolute value 1 2 16 Trigger for display change 0 none 1 absolute value st...

Page 32: ...at exceedance of output area PN20 21 4 switch to smallest value 0x0000 at exceedance of output area PN20 21 5 switch to final value at converter over underflow wire break bars 6 switch to initial val...

Page 33: ...0 no flashing 1 flashes at 1 2 flashes at 2 3 flashes at 3 4 flashes at 4 5 flashes at 1 or 2 6 flashes at 3 or 4 7 flashes at 1 2 3 or 4 0 5 Switchpoint 1 60 Switchpoint 1 0 deactivated 1 current me...

Page 34: ...rror 1 5 81 Threshold 9999 99999 1000 6 82 Hysteresis 0 99999 0 5 83 Operation type quiescent current operating current 0 quiescent current 1 operating current 1 5 84 Switching delay 0 0 10 0 seconds...

Page 35: ...return the unit to a defined basic state a reset can be carried out to the default values The following procedure should be used Switch off the power supply Press button P Switch on the power supply a...

Page 36: ...n 9999 3 The display shows HELP in the 7 segment display The device located an error in the configuration memory carry out a reset to default values and reconfigure the device according to your applic...

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